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Add mutex syscalls

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This commit is contained in:
Kamil Kowalczyk
2026-01-20 22:18:43 +01:00
parent fff51321bc
commit 7eceecf6e3
9 changed files with 122 additions and 22 deletions
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78
kernel/syscall/syscall.c
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@@ -177,12 +177,84 @@ DEFINE_SYSCALL (sys_clone) {
return pid;
}
/* int proc_sched (void) */
/* int sched (void) */
DEFINE_SYSCALL (sys_sched) {
proc_sched (regs);
return ST_OK;
}
/* int create_mutex (int mutex_rid, int vis) */
DEFINE_SYSCALL (sys_create_mutex) {
int mutex_rid = (int)a1;
int vis = (int)a2;
if (mutex_rid < 0)
return -ST_BAD_RESOURCE;
if (!(vis == RV_PUBLIC || vis == RV_PRIVATE))
return -ST_BAD_RESOURCE;
struct proc_resource* mutex_resource =
proc_create_resource (proc, mutex_rid, PR_MUTEX, vis, NULL);
if (mutex_resource == NULL)
return -ST_OOM_ERROR;
return mutex_resource->rid;
}
/* int unlink_mutex (int mutex_rid, int vis) */
DEFINE_SYSCALL (sys_unlink_mutex) {
int mutex_rid = (int)a1;
int vis = (int)a2;
if (!(vis == RV_PUBLIC || vis == RV_PRIVATE))
return -ST_BAD_RESOURCE;
struct proc_resource* mutex_resource = proc_find_resource (proc, mutex_rid, vis);
if (mutex_resource == NULL)
return -ST_NOT_FOUND;
proc_drop_resource (proc, mutex_resource, true);
return ST_OK;
}
/* int lock_mutex (int mutex_rid, int vis) */
DEFINE_SYSCALL (sys_lock_mutex) {
int mutex_rid = (int)a1;
int vis = (int)a2;
if (!(vis == RV_PUBLIC || vis == RV_PRIVATE))
return -ST_BAD_RESOURCE;
struct proc_resource* mutex_resource = proc_find_resource (proc, mutex_rid, vis);
if (mutex_resource == NULL)
return -ST_NOT_FOUND;
proc_mutex_lock (proc, &mutex_resource->u.mutex);
return ST_OK;
}
/* int unlock_mutex (int mutex_rid, int vis) */
DEFINE_SYSCALL (sys_unlock_mutex) {
int mutex_rid = (int)a1;
int vis = (int)a2;
if (!(vis == RV_PUBLIC || vis == RV_PRIVATE))
return -ST_BAD_RESOURCE;
struct proc_resource* mutex_resource = proc_find_resource (proc, mutex_rid, vis);
if (mutex_resource == NULL)
return -ST_NOT_FOUND;
return proc_mutex_unlock (proc, &mutex_resource->u.mutex) ? ST_OK : -ST_PERMISSION_ERROR;
}
static syscall_handler_func_t handler_table[] = {
[SYS_QUIT] = &sys_quit,
[SYS_TEST] = &sys_test,
@@ -192,6 +264,10 @@ static syscall_handler_func_t handler_table[] = {
[SYS_SCHED] = &sys_sched,
[SYS_CREATE_MEM] = &sys_create_mem,
[SYS_UNLINK_MEM] = &sys_unlink_mem,
[SYS_CREATE_MUTEX] = &sys_create_mutex,
[SYS_UNLINK_MUTEX] = &sys_unlink_mutex,
[SYS_LOCK_MUTEX] = &sys_lock_mutex,
[SYS_UNLOCK_MUTEX] = &sys_unlock_mutex,
};
syscall_handler_func_t syscall_find_handler (int syscall_num) {